C
- C & A
- C-Date - Casual Dating
- Cabal
- Cabrio Gewinnspiel
- Calida Bodywear
- callmobile
- CallYa
- Calu Naturkosmetik
- Camp David
- Canada’s West
- CANCOM
- CANUSA TOURISTIK
- Canvas Holidays
- Capris Haar-Konzept
- Car Gewinnspiel
- Carcredit
- card4students
- CarDelMar
- cardNmore
- CARE - Für eine Welt ohne Armut
- CARE Vision
- care-concept
- carlgross.de
- Carmondo
- Carnival Megastore
- carsablanca
- Cartridge People
- Case King
- Cash4Mobile
- CashCredit24
- cashfix.de
- Casting Agentur
- Casting Dreams
- Casual Male XL
- Catrun-Shop
- ccbparis
- CDWOW!
- CeDe
- Celldorado
- Center Parcs
- CenterCourt
- Centhunter
- Cestino
- Chamilia
- Change
- Channel 21 Shop
- Charles & Marie
- Charles Tyrwhitt
- Charles Vögele
- Cheap Sim
- Cheapflug
- cheaptickets
- CHECK24
- CHEF GOURMET
- Chilipreis
- Chilipreis-shop
- China Tours
- CHIP
- ChipsMix
- Chocolissimo
- chocri
- ciando eBooks
- Ciao! Surveys
- Cinque Store
- Citibank
- CityDeal
- Clarks
- cleenbox
- Clevergy
- Cliche Germany
- Click und Flieg
- clip2go
- Cloggs
- Close Up Posters
- ClubMail
- Cluboptiker
- Clueso Ticketshop
- Codello
- Cofman
- Coin Pusher
- Coke Fridge
- ColorWay.de
- Columbia
- Columbus Direct
- comdirect
- Computer Associates
- Computer Bild
- Computer Universe
- Computerbild Spiele
- Comtech
- Concert Online
- Condor
- confettisportswear
- Congstar
- Connect by Hertz
- connox
- conrad cXtreme
- Conrad-Security
- Conrad.de
- contactlinsen-man
- Contento
- Conwear.de
- cookie mania
- cookplanet
- Corel
- Craft
- Crash
- Crazy Presents
- crazycovers
- creasyst
- Credit Europe Bank
- Creditolo
- Creditplus Bank
- Cristal Card
- Crocs
- Crowne Plaza
- CSL Computer
- CTP
- Cubit
- CyberLink
- cyberport
- Czech Airlines